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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Bind class that accepts object from external package","articleBody":"Hi,\r\n\r\nI have simple class:\r\n```cpp\r\n#ifndef __qColadaTreeTEST_h\r\n#define __qColadaTreeTEST_h\r\n\r\n// Qt includes\r\n#include \u003cQTreeView\u003e\r\n\r\n// Colada includes\r\n#include \"qColadaAppExport.h\"\r\n\r\n// h5gt includes\r\n#include \u003ch5gt/H5File.hpp\u003e  // has python bindings using pybind11 \r\n\r\nclass Q_COLADA_APP_EXPORT qColadaTreeTEST : public QTreeView {\r\n  Q_OBJECT\r\n\r\npublic:\r\n  explicit qColadaTreeTEST(QWidget *parent = nullptr);\r\n  ~qColadaTreeTEST() = default;\r\n\r\npublic slots:\r\n  bool addH5File(h5gt::File file);  // file -  is of type `h5gt::File` -\u003e it has python bindings\r\n};\r\n\r\n#endif\r\n```\r\nas you can see it accepts `h5gt::File file` wich is not Qt based C++ class. But `h5gt` library has python bindings done with `pybind11` so it is accessible from python.\r\n\r\nWhen `qColadaTreeTEST` is binded via PythonQt I cannot call `addH5File` with `h5gt.File` argument as it gives me an error:\r\n```python\r\nimport qColadaAppPythonQt\r\nq = qColadaAppPythonQt.qColadaTreeTEST()\r\n\r\nfrom h5gtpy import h5gt\r\nfile_name = 'D:/test.h5'\r\nfile = h5gt.File(file_name, h5gt.OpenFlag(h5gt.ReadWrite | h5gt.Create | h5gt.Truncate))\r\n\r\nq.addH5File(file)   # here I get the following error:\r\n\r\nTraceback (most recent call last):\r\n  File \"\u003cconsole\u003e\", line 1, in \u003cmodule\u003e\r\nValueError: Called addH5File(h5gt::File file) -\u003e bool with wrong arguments: (\u003ch5gtpy._h5gt.File object at 0x00000285128901F0\u003e,)\r\n```\r\nHow to tell PythonQt that `h5gt::File` C++ class is the same as `h5gtpy._h5gt.File` in Python?\r\n","author":{"url":"https://github.com/kerim371","@type":"Person","name":"kerim371"},"datePublished":"2021-07-20T10:54:34.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/55/pythonqt/issues/55"}